Syphonus is in The Ruined Sanctum building in Aszuna. He's at 67.1, 51.4, you have to take stairs at 66.4, 50.1. He's a part of Adventurer of Azsuna achievement.
For TomTom users: /way Aszuna 67.1, 51.4 Syphonus /way Aszuna 66.4, 50.1 path to Syphonus
Syphonus is in The Ruined Sanctum building in Aszuna. He's at 67.1, 51.4, you have to take stairs at 66.4, 50.1.
He's a part of Adventurer of Azsuna achievement.
For TomTom users:
/way Aszuna 67.1, 51.4 Syphonus
/way Aszuna 66.4, 50.1 path to Syphonus